JP2022520602A - Position-based CORSET configuration for transmitting physical downlink control channels in 5G wireless communication systems - Google Patents

Abstract

The disclosed subject matter relates to techniques for determining the appropriate aggregation level for a control channel resource set (CORESET). In one embodiment, a method comprising determining the aggregation level applied by a second device to decode a candidate downlink control channel associated with CORESET by a first device operably connected to a processor. Provided. The method further comprises transmitting, by the first device, aggregation level information indicating the aggregation level to the second device. As a result of transmission, the second device will be configured to apply the aggregation level in connection with the attempt to decode the candidate control downlink control channel. In various embodiments, the aggregation level is based on one or more criteria including the aggregation level capability of the second device, the position of the second device with respect to the first device, and the geometry associated with the second device. Will be decided.

Description

Cross-reference of related applications This application is filed on February 15, 2019, "LOCATION BASED CORSET CONFIGURATION FOR TRANSMITTING THE PHYSICAL DOWNLINK CONTROL CHANNEL IN 5G WIRELESS, Japanese Patent No. 27/ It claims priority and is expressly cited herein by reference in its entirety.

The subject matter disclosed relates to wireless communication systems and, more particularly, is suitable for transmitting physical downlink control channels (PDCCH) associated with control channel resource sets (CORESET) in New Radio (NR) access communication systems. Regarding techniques for determining the aggregation level.

To meet the immense demand for data-centric applications, New Radio is a system that utilizes one or more aspects of the 3rd Generation Partnership Project (3GPP) system and the 4th Generation (4G) standard specification for wireless communication. It has been extended to the 5th generation (5G) standard for wireless communication, also known as (NR) access. Compared to existing 4G technology, 5G targets much higher throughput with lower latency, takes advantage of higher carrier frequencies and wider bandwidth, while reducing energy consumption and cost. 5G networks are also expected to provide access and services for systems with different characteristics and connection controls for future services. In this regard, the NR design needs to be flexible and tuned for new requirements.

FIG. 6 is a diagram of an exemplary wireless communication system that facilitates a position-based CORESET configuration for transmitting PDCCH according to various aspects and embodiments of the present disclosure. A graph is presented showing the block error rate (BLER) at different aggregation levels as a function of signal-to-noise ratio (SNR) according to various aspects and embodiments of the present disclosure. A signaling diagram of an exemplary message sequence for adjusting the PDCCH aggregation level for a user device (UE) specific CORESET according to various aspects and embodiments of the present disclosure is presented. A signaling diagram of an exemplary message sequence for adjusting the PDCCH aggregation level for UE-specific CORESET according to various aspects and embodiments of the present disclosure is presented. A flow diagram of an exemplary method for adjusting PDCCH aggregation levels for UE-specific CORESET according to various aspects and embodiments of the present disclosure is presented. An upper flow diagram of an exemplary method for adjusting PDCCH aggregation levels for UE-specific CORESET according to various aspects and embodiments of the present disclosure is presented. A high-level flow diagram of another exemplary method for adjusting the PDCCH aggregation level for UE-specific CORESET according to various aspects and embodiments of the present disclosure is presented. Shown are high-level flow diagrams of exemplary methods for receiving and applying UE-specific aggregation levels for decoding candidate PDCCH associated with CORESET, according to various aspects and embodiments of the present disclosure. A high-level flow diagram of another exemplary method for receiving and applying UE-specific aggregation levels for decoding candidate PDCCH associated with CORESET according to various aspects and embodiments of the present disclosure is presented. Shown is an exemplary schematic block diagram of a computing environment in which the disclosed subjects can interact. An exemplary block diagram of a computing system capable of operating to perform the disclosed systems and methods according to an embodiment is shown.

The following detailed description is merely exemplary and is not intended to limit the application or use of embodiments and / or embodiments. Moreover, it is not intended to be bound by any explicit or implied information presented in previous sections or detailed description sections.

In many radio communication systems, including 5G NR radio communication systems, the physical downlink control channel (PDCCH) carries and provides downlink control information (DCI) to the UE, such as information about downlink scheduling assignments and uplink scheduling grants. Used to do. For example, for a multi-input, multi-output (MIMO) system, DCI typically relates to the number of scheduled MIMO layers, transport block size, modulation of each codeword, hybrid automatic repeat request (HARQ). Includes parameters, subband positions, etc. However, the specific content of the PDCCH can vary based on the transmission mode and DCI format.

Traditional long term evolution (LTE) control channels are distributed across the system bandwidth, making it difficult to control cell-to-cell interference. However, the PDCCH of the NR is specifically designed to be propagated in a configurable control channel resource set (CORESET). CORESET is a time-frequency resource allocation for a UE, and within that time-frequency resource allocation, the UE may receive candidate PDCCH. CORESET is similar to the control region in LTE, but the set of resource blocks (RB) in which CORESET is located and the set of orthogonal frequency division multiplexing (OFDM) symbols can be configured by the corresponding PDCCH search space. It is generalized in the sense that. As described above, the flexible configuration of the control region including the time, frequency, numerology, and operating point allows the NR to cope with a wide variety of use cases.

For example, the size and location of CORESET can be set smaller than the carrier bandwidth because it can be configured by the network. The first CORESET (referred to as CORESET0) is provided by the master information block (MIB) as part of the configuration of the initial bandwidth portion to allow the UE to receive the remaining system information and additional configuration information from the network. enable. After setting up the connection, the UE may be configured with multiple CORESETs that may overlap, using the Radio Resource Control (RRC) signaling protocol. According to existing NR standards, in the time domain, CORESET can be up to 3 OFDM symbols of duration and can be placed anywhere within the time slot. Existing NR standards further define CORESET in the frequency domain, using multiples of six resource blocks, up to carrier bandwidth. The frequency allocation in the CORESET configuration can be continuous or discontinuous.

The PDCCH is limited to one CORESET and transmitted on its own demodulation reference signal (DMRS), which allows UE-specific beamforming of the control channel. According to existing NR standards, PDCCH is encoded using an aggregation level selected from a set of five possible aggregation levels called Level 1, Level 2, Level 4, Level 8, and Level 16. Each of these aggregation levels corresponds to a different control channel resource element (CCE) that can carry PDCCH (eg, level 1 corresponds to one CCE, level 2 corresponds to two CCEs, level 4). Corresponds to 4 CCEs, etc.). In this regard, the UE needs to decode each PDCCH with its corresponding aggregation level (eg, either Level 1, Level 2, Level 4, Level 8, or Level 16). Different aggregation levels (or CCE assignments) in the PDCCH are used to accommodate different DCI payload sizes or different coding rates (also called different DCI formats) in the PDCCH. For example, NR currently defines four different DCI sizes / coding rates (or formats). One size / code rate is used for fallback DCI, the second size / code rate is used for downlink grant scheduling, and the third size / code rate is used for uplink grant scheduling. The fourth size / code rate used is used for slot format instructions and preemption instructions depending on the configuration.

The initial NR standard requires UEs to blindly monitor the number of PDCCH candidates with different DCI formats and different aggregation levels. In this regard, at each CORESET assigned to the UE, the UE is required to blindly decode all possible DCI sizes / formats (eg, currently containing four) and all possible. Use the aggregation level (eg, currently contains 5). Thus, the number of each decryption option for each CORESET is 20, and the UE can be configured with a plurality of CORESETs (eg, currently up to 4 different CORESETs). Therefore, the cost of complexity associated with this blind decryption process is enormous and cannot be extended to an increasing number of combinations of PDCCH size / format and aggregation level.

In order to limit the complexity on the UE side in the search / decryption of all the CORESETs configured, using any different aggregation level, etc., a limited set of search spaces for the UE to search and decode is provided in the NR. Several NR protocols have been proposed to define. The search space can be characterized by CORESET as a set of candidate control channels formed at a given aggregation level on which the UE is to attempt decoding. Since there are a plurality of CORESETs, there are a plurality of search spaces. Some NR protocols suggest limiting the number of search spaces to 10 or less for each UE. According to the search space limiting technique, the network needs to indicate to the UE the defined search space and the corresponding aggregation level. Using these techniques, it is common practice to configure the aggregation level for a given CORESET to a constant value in order to further reduce the complexity associated with search spaces involving a large number of possible aggregation levels. It has been. However, using a fixed value for the aggregation level for a given CORESET will use resources that are not needed for the PDCCH, thereby reducing the resources available for the physical downlink shared channel (PDSCH). As a result, link and system throughput are reduced, which is not efficient for 5G systems.

The disclosed subject matter is efficient in reducing the complexity of the PDCCH search space while optimizing link and system throughput by adjusting the aggregation level for each CORESET assigned to the UE based on UE-specific criteria. Provide a solution. In various embodiments, the network node includes, but is not limited to, the known aggregation level capability of the UE, the location of the UE within the cell (eg, the distance from the UE to the network node), and / or the geometry of the UE. Based on one or more criteria, the appropriate aggregation level for CORESET configured in a given UE can be determined. The network node may further provide the UE with information indicating the determined aggregation level for a given CORESET in the UE-specific search space. For example, in various embodiments, the network node has higher layer signaling (eg, Radio Resource Control (RRC)) to instruct the UE with respect to the determined aggregation level of a given CORESET configured for the UE. Signaling and / or media access control (MAC) signaling) may be employed. The UE may be further configured to apply an aggregation level in connection with an attempt to decode a PDCCH candidate corresponding to a given CORESET, thereby based on the UE's capabilities and / or context (eg, needs). The number of blind decoding attempts can be reduced while optimizing the amount of PDCCH resources used. In this regard, the disclosed technique is efficient in terms of time / frequency resources, thus minimizing the resources required to transmit a downlink control channel (eg, PDCCH) and using it for data transmission. You can increase the amount of resources available. Therefore, as the data transmission resource increases, the link and system throughput are greatly improved.

According to one or more embodiments, a first device (eg, gNodeB, etc.) is provided that comprises a processor and a memory that stores executable instructions that facilitate execution of the operation when executed by the processor. To. These actions may include determining the aggregation level applied by the second device (eg, the UE) to decode the candidate downlink control channel associated with CORESET. The operation further comprises transmitting aggregation level information indicating the aggregation level to the second device. Based on transmission, the second device is configured to apply an aggregation level in connection with an attempt to decode a candidate control downlink control channel. In one or more implementations, transmitting aggregation level information involves adopting a signaling protocol classified as an upper layer signaling protocol.

In some implementations, determining an aggregation level involves selecting an aggregation level from a group of candidate aggregation levels based on defined criteria. For example, in one implementation, the aggregation level may be determined based on capability information indicating one or more aggregation levels supported by the second device. In another implementation, the aggregation level may be determined based on the position of the second device. In another implementation, the aggregation level may be determined based on the distance between the second device and the first device. For example, in this implementation, determining the aggregation level means choosing a first aggregation level based on the fact that the distance is shorter than the defined distance, and that the distance is longer than the defined distance. It can include selecting a second aggregation level based on the first aggregation level being lower than the second aggregation level. In another implementation, the aggregation level may be determined based on the geometry associated with the second device. For example, in this implementation, determining the aggregation level means selecting the first aggregation level based on the geometry being smaller than the defined value and the geometry being greater than the defined value. It can include selecting a second aggregation level based on the first aggregation level being higher than the second aggregation level.

In various additional embodiments, determining the aggregation level is applicable to the first criterion applicable to the aggregation level capability of the second device, the position of the second device relative to the first device. Choosing an aggregation level from a group of candidate aggregation levels based on a combination of criteria selected from a group of criteria consisting of two criteria and a third criterion applicable to the geometry associated with the second device. include.

According to one or more embodiments, a first device (eg, a UE, etc.) is provided that comprises a processor and a memory that stores executable instructions that facilitate execution of the operation when executed by the processor. To. These actions can include receiving aggregation level information indicating the aggregation level for CORESET from a second device (eg, gNodeB), where the aggregation level is second from the candidate aggregation level based on a defined criterion. Selected by the device. The operation further comprises adopting an aggregation level in connection with an attempt to decode a candidate downlink control channel associated with CORESET based on reception. For example, a defined criterion may be evaluated for a group of device criteria consisting of the aggregation level capability of the first device, the position of the first device relative to the second device, and the geometry associated with the first device. .. In some implementations, the aggregation level information includes a first aggregation level information, the aggregation level contains a first aggregation level, and the behavior contains a second aggregation level information indicating a second aggregation level for CORESET. The second aggregation level is selected by the second device from the candidate aggregation levels based on the modification of the defined criteria, further including receiving from the second device. The operation further comprises adopting a second aggregation level instead of a first aggregation level in connection with an attempt to decode a candidate downlink control channel based on reception.

In some embodiments, the elements described in relation to the disclosed system can be embodied in various forms, such as computer-implemented methods, computer-readable or machine-readable storage media, or other forms.

Next, the present disclosure will be described with reference to the drawings. In the drawings, similar reference numerals are used throughout to refer to similar elements. The following description and accompanying drawings describe in detail certain exemplary embodiments of the subject. However, these aspects show only a few of the various ways in which the subject principle can be adopted. Other aspects, advantages, and novel features of the disclosed subject matter should be apparent from the detailed description below when considered in conjunction with the provided drawings. In the following description, for explanatory purposes, many specific details are provided to fully understand the present disclosure. However, it may be clear that the present disclosure can be carried out without the use of these specific details. In another example, well-known structures and devices are shown in the form of block diagrams to facilitate the description of the present disclosure. Terms such as scheme, protocol, and configuration are used interchangeably throughout the present specification to refer to a defined way for formatting, transmitting, or receiving information.

FIG. 1 is a diagram of an exemplary wireless communication system 100 that facilitates a position-based CORESET configuration for transmitting PDCCH according to various aspects and embodiments of the present disclosure. The system 100 may include a plurality of UEs 102 and a wireless network node 104. As used herein, the non-limiting term user equipment (UE) is used to refer to any type of wireless device capable of communicating with a wireless network node in a cellular or mobile communication system. Some exemplary UEs include target devices, device-to-device communication (D2D) UEs, machine-type UEs or UEs capable of machine-to-machine (M2M) communication, personal digital assistants (PDAs), tablet personal computers (PCs). , Mobile terminals, smartphones, laptops, notebook PCs, laptop embedded devices (LEE), laptop-mounted devices (LME), USB dongle, wearable devices, virtual reality (VR) devices, heads-up displays (HUD) It may include, but is not limited to, devices, smart cars, and the like. In one or more embodiments, each UE 102 (and network node 104) can include two or more antennas (not shown), thereby relating to a 5G NR communication scheme with phase tracking. And supports multi-input multi-output (MIMO) communication. The number of antennas provided in the UE 102 can vary (eg, from two to hundreds or more to accommodate large MIMO systems). In this regard, according to various embodiments, the wireless communication system 100 may be a MIMO system or may include a MIMO system. MIMO systems can significantly increase the data transmission capacity of wireless systems. For these reasons, MIMO is an integral part of 3GPP and 4GPP generation wireless systems. The wireless communication system 100 may further support the large-scale MIMO communication protocol introduced by 5G NR, which uses hundreds of antennas on the transmitting side and the receiving side.

In this regard, various embodiments include single-carrier and multi-carrier (MC) or carrier aggregation of the UE, in conjunction with MIMO in which the UE can use MIMO to receive and / or transmit data to multiple serving cells. (CA) Applicable to operation. However, the various techniques described herein are not limited to use in MIMO systems, but are also applicable to other wireless communication systems (eg, uplink and sidelink systems). The term carrier aggregation (CA) is also referred to as "multi-carrier system", "multi-cell operation", "multi-carrier operation", "multi-carrier" transmission and / or reception (eg, synonymously). Note that the solutions outlined are also applicable to multi-RABs (radio bearers) on either carrier (ie, data and voice are scheduled simultaneously). Similarly, the solution is that some UE 102s are scheduled using eMBB, some UE 102s are scheduled using URLLC, and some UE 102s are scheduled using the mMTC application. It is also applicable when there is.

In the illustrated embodiment, the system 100 is, or includes, a wireless communication network serviced by one or more wireless communication network providers. The UE 102 may be communicably coupled to the wireless communication network via the network node 104. At this point, the UE 102 can transmit and / or receive communication data to and / or receive communication data to the network node 104 via a wireless link or channel. For example, the dashed arrow line from the network node 104 to the exemplary UE 1 represents downlink communication, and the solid arrow line represents uplink communication. It should be understood that these arrows are provided only to illustrate the radio communication link between the UE and the network node 104. In this regard, the arrow is not drawn for all UEs 102 shown, but all UEs shown may be able to wirelessly communicate with the network node 104 using uplink and downlink communication. Please understand.

The non-limiting term network node (or wireless network node) provides services to the UE 102 and / or connects to another network node, network element, or another network node to which the UE 102 can receive radio signals. As used herein to refer to any type of network node that is used. Examples of network nodes (eg, network node 104) include base station (BS) devices, NodeB devices, multi-standard radio (MSR) devices (eg MSR BS), gNodeB devices, eNodeB devices, network controller devices, wireless networks. Controller (RNC) device, base station controller (BSC) device, repeater device, donor node device control repeater, base transceiver base station (BTS) device, access point (AP) device, transmit point device, transmit node, RRU device , RRH devices, node devices in distributed antenna systems (DAS), and the like, but are not limited thereto. According to one or more embodiments, the network node 104 may include two or more antennas to support various MIMO and / or large-scale MIMO communications in connection with phase tracking.

The system 100 facilitates the provision of wireless communication services to various UEs, including the UE 102, via the network node 104, one or more communication service provider networks 106, and / or one or more communication services. Various additional network devices (not shown) contained within the provider network 106 can be further included. In the illustrated embodiment, the area defined by the hexagon represents a single wireless network cell 110 serviced by the network node 104. However, it should be understood that the system 100 may include multiple cells, each communicably coupled to one or more communication service provider networks 106, each providing service. In this regard, the one or more communication service provider networks 106 may include cellular networks, femto networks, picocell networks, microcell networks, internet protocol (IP) networks, Wi-Fi service networks, broadband service networks, enterprise networks, clouds. It may include various heterogeneous networks including, but not limited to, base networks and the like. For example, in at least one implementation, the system 100 can be, or include, a large-scale wireless communication network that spans various geographic areas. According to this embodiment, the one or more communication service provider networks 106 are wireless communication networks and / or various additional devices and components of the wireless communication network (eg, additional network devices and cells, additional UEs, etc.). Network server devices, etc.), or can include them. The network node 104 may be connected to one or more communication service provider networks 106 via one or more backhaul links 108. For example, one or more backhaul links 108 can be T1 / E1 telephone lines, digital subscriber lines (DSL) (eg, either synchronous or asynchronous), asymmetric DSL (ADSL), fiber optic backbones, coaxial cables, and the like. Wired link components such as, but are not limited to. The one or more backhaul links 108 may also be, but are not limited to, terrestrial radio interfaces or deep space links such as line-of-sight (LOS) or non-LOS links that may include navigation satellite communication links. Can include components.

Although the present disclosure is intended for systems that employ 5G or NR communication technology, the system 100 includes various wireless communication technologies to facilitate wireless wireless communication between devices (eg, UE 102 and network node 104). Please understand that can be adopted. In this regard, the disclosed techniques for CSI estimation related to PTRS integration are Long Term Evolution (LTE), Frequency Division Duplex (FDD), Time Division Duplex (TDD), FDD / TDD, Broadband Code Division. Includes, but is limited to, Multiple Connections (WCMDA), High Speed Packet Access (HSPA), WCMDA / HSPA, Pan-European Digital Mobile Communication Systems (GSM), 3GGP, GSM / 3GPP, Wi-Fi, WLAN, WiMax, CDMA2000, etc. It can be applied to any RAT or multi-RAT system in which the UE operates using multiple carriers.

As mentioned above, in an NR communication system such as system 100, network node 104 uses one of several configurable PDCCHs to transmit DCI to UE 102. For example, each CORESET can hold several different PDDCHs of different DCI sizes / formats, and the UE 102 can be configured with multiple CORESETs (eg, 1 to 4 according to current 5G specifications). In addition, each candidate PDCCH may be encoded using one of several possible aggregation levels (eg, Level 1, Level 2, Level 4, Level 8, and Level 16). The UE 102 searches for a large number of candidate PDCCHs across all protocols configured for the UE, and uses all possible aggregation levels (eg, 1, 2, 4, 6, 8, or 18). To limit attempts to decode each candidate PDCCH, the NR protocol defines a restricted search space for the UE. A single search space uses one aggregation level within one or more CORESETs assigned to the UE 102 to indicate possible candidate PDCCHs that the UE should attempt to decrypt. To further reduce the complexity associated with the number of decryption attempts of the candidate PDCCH and the corresponding UE, the NR protocol attempts to configure the aggregation level for a given CORESET to a constant value. This is because network node 104 is significantly overusing unnecessary resources in many scenarios, such as scenarios where lower aggregation levels can be used without compromising performance quality, for each CORESET for all UE 102 in 110 cells. It means applying the same aggregation level to each PDCCH of.

System 100 is much more efficient in reducing the complexity of the PDCCH search space while optimizing link and system throughput by adjusting the aggregation level for each CORESET assigned to the UE based on UE 102 specific criteria. Provide a solution. In particular, instead of applying the same aggregation level to each CORESET used by all UEs 102 in cell 110, according to the disclosed technique, the network node 104 is a UE 102 based on one or more UE-specific criteria. The aggregation level for a given CORESET assigned to (eg, by network node 104) can be adjusted. For example, in some embodiments, the network node 104 selects the appropriate aggregation level for encoding the PDCCH from a defined set of possible aggregation levels based on one or more UE-specific criteria. Can be. For example, a defined set of aggregation levels may include NR aggregation levels 1, level 2, level 4, level 8, and level 16. In another embodiment, the network node 104 has a new UE-specific aggregation level (eg, for example) for encoding the PDCCH for a given UE 102 and assigned CORESET based on one or more UE-specific criteria. Aggregation levels between or above level 1, level 2, level 4, level 8, and level 16) can be determined.

UE-specific criteria may include predefined performance criteria. In various embodiments, the UE-specific criterion is one of the known aggregation level capabilities of the UE 102, the position of the UE 102 within the cell (eg, the distance from the UE 102 to the network node 104), and / or the geometry of the UE. , Or a combination of two or more. For example, in various implementations, the UE 102 may not be able to support all possible aggregation levels.

For example, the UE may only accept one or a subset of possible aggregation levels (eg, one or a subset of the aggregation levels contained in the group consisting of level 1, level 2, level 4, level 8, and level 16). Can support. For example, some UE 102s may only support low levels of aggregation levels 1, 2, and 4, while others 102 may only support high levels of aggregation levels 8 and 16. Thus, in one or more embodiments, the network node 104 may receive UE aggregation level capability information from the UE 102 indicating one or more aggregation levels supported by the UE. For example, the UE 102 may be configured to provide information on the UE aggregation level capability at the time of initial link setup, registration of the UE with a network provider, or otherwise in a suitable manner. In another implementation, network node 104 can search for UE aggregation level capabilities in a network accessible database based on known information about the UE (eg, UE type, UE unique identifier, etc.). Regardless of how the network node 104 obtains the aggregation level capability information for the UE 102, the network node 104 utilizes the UE aggregation level capability information and is available for PDCCH based on what the UE can support. You can limit the level. In some implementations where the capability of the UE is unknown or undecidable, the network node 104 can apply the default aggregation level capability limit. For example, the default aggregation level capacity limit may include a predefined subset (eg, one or more) of possible aggregation levels. For example, if the capabilities of the UE are unknown or undecidable, the network node 104 states that the UE can support a default aggregation level (eg, level 8) or a subset of the default aggregation levels (eg, level 4 and level 8). It can be assumed.

The selection of the aggregation level based on the position of the UE is based on the observed correlation between the signal-to-noise ratio (SNR) and the block error rate (BLER) at the different aggregation level from the position of the UE in the cell. In particular, the SNR generally increases as the UE 102 approaches the network node 104 and decreases as the UE moves away from the network node. For example, lower SNRs are observed more frequently at the edges of cell 110, while higher SNRs are observed more frequently at the center of cell 110.

FIG. 2 presents Graph 200 showing the block error rate (BLER) at different aggregation levels as a function of signal-to-noise ratio (SNR) according to various aspects and embodiments of the present disclosure. As shown in Graph 200, the performance of BLER depends on the aggregation level and the specific SNR. In this regard, at all aggregation levels, the BLER decreases as the SNR increases. However, lower aggregation levels (eg, AL2 and AL4) provide a sufficiently low BLER (eg, good performance) at high SNR levels. Thus, lower aggregation levels (eg, AL1, AL2, and AL4) may provide good BLER performance in high SNR scenarios. On the other hand, when the SNR is low, higher aggregation levels (eg, AL8 and AL16) can be used to achieve good BLER performance.

Thus, in various embodiments, the network node 104 can be configured to determine / select an appropriate aggregation level based on the distance between the UE 102 and the network node, the closer the UE 102 is to the network node 104. The SNR is low and therefore the aggregation level is low. For example, if the UE 102 is close to the network node 104, the network node 104 may configure the UE to use a lower aggregation level (eg, AL1, AL2, or AL4). This is because in the center of the cell, the UE generally has a high SNR. Similarly, if the UE 102 is at the edge of the cell, the network node 104 may configure the UE to use a higher aggregation level (eg, AL8 or AL16). In various embodiments, the network node 104 may employ a predefined distance range or threshold to determine the appropriate aggregation level. For example, at distances less than "n" meters between the UE 102 and the network node, the network node can apply a first aggregation level (eg AL1), longer than "n" meters and more than "m" meters. At short distances, network nodes can apply a second aggregation level (eg AL2) that is higher than the first aggregation level, and at distances longer than "m" meters and shorter than "p" meters, the network. The node can apply a third aggregation level (eg, AL4) that is higher than the second aggregation level, and so on.

In other embodiments where the network node 104 receives and / or determines information about the SNR experienced by the UE, the network node 104 can determine the aggregation level based on the SNR and the lower aggregation level is used for the higher SNR. , High aggregation levels are used for low SNR. For example, in these embodiments, the network node 104 may apply similar SNR thresholds and / or ranges assigned to different aggregation levels. For example, the network node 104 can assign a first aggregation level (eg, AL16) to an SNR less than "x" and a lower than the first aggregation level to an SNR greater than "x". A defined aggregation level vs. SNR level criterion, such as the ability to assign two aggregation levels (eg, AL8), may be adopted.

The UE's geometry criteria also (in addition to and / or as an alternative to the positional criteria) to determine the appropriate aggregation level to apply to the UE in relation to decoding the candidate PDCCH for a given CORESET. ) Can be adopted by network node 104. The geometry of the UE can be determined as a function of the signal-to-noise ratio (SINR) and / or the CQI reported by the UE 102. For example, in some implementations, the geometry of the UE may be determined by the network node (and / or determined by the UE and reported by the UE) by averaging SINRs, eg, uplink channel estimates. In other implementations, the geometry of the UE can be determined by averaging the CQIs reported by the UE. With respect to the geometry of the UE, the network node 104 can assign a high aggregation level to the geometry of the low UE (eg, low SINR) and a low aggregation level (eg, high SNR) to the geometry of the high UE. For example, the network node 104 can assign a first aggregation level (eg, AL8) to geometries smaller than "y" and less than a first aggregation level for geometries greater than "y". Two defined aggregation level vs. UE geometry criteria such as can be assigned (eg, AL4) can be adopted.

In some embodiments, the network node 104 may employ one of the above criteria to determine the appropriate aggregation level applied by the UE in relation to decoding the candidate PDCCH for a given CORESET. .. In other embodiments, the network node may employ a combination of two or more of the above criteria. In some embodiments where the UE consists of two or more CORESETs, the network node 104 may determine or select a single aggregation level for all of the CORESETs. In other embodiments, the network node 104 may determine or select different aggregation levels for two or more of the CORESETs. In this regard, the network node 104 may adjust the aggregation level for each CORESET based on UE-specific criteria. As a result, in some implementations, two or more CORESETs assigned to a UE can receive different aggregation level assignments.

The network node 104 may further encode the PDCCH at the determined or selected aggregation level for the CORESET on which the PDCCH is provided. In addition, the network node 104 may instruct the UE 102 to apply only the determined or selected aggregation level in connection with decoding the candidate PDCCH for the corresponding CORESET. At this point, the network node 104 can notify the UE regarding the selected / determined aggregation level for a given CORESET. The UE 102 has selected / determined aggregation levels in connection with an attempt to decode the candidate PDCCH corresponding to a given CORESET based on the receipt of information identifying the selected / determined aggregation level for a given CORESET. Can be further configured to apply. In various embodiments, the network node 104 directs the UE to a determined aggregation level for a given CORESET configured for the UE with higher layer signaling (eg, radio resource control (RRC) signaling and). / Or media access control (MAC) signaling) may be employed.

The network node 104 selects / determines the PDCCH aggregation level for the CORESET assigned / configured for the UE 102 based on the known capabilities, positions, and / or geometry of the UE 102, and the candidates associated with that CORESET. The disclosed technique for instructing the UE 102 to apply only the aggregation level selected / determined to decode the PDCCH significantly reduces the number of blind decoding attempts required by the UE. .. In addition, the time and frequency resources used for the PDCCH of the set of UEs in cell 110 are efficiently distributed based on the capabilities and / or the UE's (eg, needs) of the UE. As a result, the amount of resources available for data transmission increases, which improves link and system throughput.

FIG. 3 presents a signaling diagram of an exemplary message sequence 300 for adjusting the PDCCH aggregation level for UE-specific CORESET according to various aspects and embodiments of the present disclosure. The message sequence 300 specifically illustrates a process for downlink data transfer in a 5G / NR system. The message sequence 300 includes determining an aggregation level for a UE (eg, UE 102) by a network node (eg, network node 104) and transmitting the aggregation level to the UE. The message sequence 300 also exemplifies a response on the UE side based on the reception of an aggregation level. Duplicate explanations of similar elements used in each embodiment are omitted for the sake of brevity.

At 302, network node 104 may transmit cell-specific / UE-specific reference signals as standard downlink data transfer begins. From the pilot or reference signal, the UE calculates channel estimates and then the parameters required for channel state information (CSI) reporting. The UE 102 may further transmit CSI reports to the network node 104 via the uplink feedback channel upon request from the network node or periodically. The network scheduler uses CSI information when selecting parameters for scheduling the UE. The network node 104 transmits the scheduling parameters to the UE as DCIs on the downlink control channel (eg, PDCCH). After that, the actual data transfer may be performed from the network node 104 to the UE.

According to 5G / NR signaling, the DCI can be encoded into one of a plurality of possible PDCCHs, each associated with one or more CORESETs assigned to the UE 102. In this regard, CORESET is defined from the perspective of the UE and indicates only where the UE 102 can receive PDCCH transmissions (eg, search space). The CORESET configuration information assigned to the UE by the network node 104 does not provide confirmation to the UE that the network node 104 has transmitted or transmitted the PDCCH to the UE. In addition, 104 of the network node is information indicating where and how it is specifically configured when the PDCCH is sent (eg, of a particular CORESET when multiple CORESETs are assigned to the UE). It does not provide the UE 102 with any location, specific DSI size / format, specific time / frequency resources used, specific numerology used, etc.).

However, by the disclosed signaling technique, at 304, at 304, the network node 104 determines the aggregation level (for encoding / decoding the PDCCH) for each CORESET assigned to the UE, based on the UE-specific aggregation level criteria. Can be. For example, the network node 104 has a known aggregation level supported by the UE, the position of the UE with respect to the network node 104, the SNR reported by the UE in relation to receiving a signal (eg, a reference signal) from the network node 104. And based on one or more of the geometry of the UE, the most appropriate aggregation level for encoding / decoding the PDCCH (eg, AL1, AL2, AL4, AL8, or AL16) may be determined or selected. For example, in some implementations, if the UE is configured with multiple CORESETs, the network node 104 may determine different aggregation levels for the UE to use for two or more of the different CORESETs. In other implementations, if the UE is configured with multiple CORESETs, the network node 104 may determine a single aggregation level for the UE to apply to all CORESETs.

At 306, the network node 104 may transmit UE CORESET-specific aggregation level information indicating the selected / determined aggregation level for each CORESET. In various embodiments, the network node 104 may use upper layer signaling (eg, RRC signaling protocol and / or MAC signaling protocol) to transmit aggregation level information to the UE. At 308, the UE may send feedback (eg, CSI feedback) to the network node 104 via the uplink feedback channel. At 310, the network node may transmit a possible DCI to the UE via the PDCCH from among the plurality of candidate downlink control channels. At 312, the UE may employ a CORESET-specific aggregation level to attempt to decode the associated candidate downlink control channel. If the UE receives the PDCCH and successfully decodes it, at 314 the UE may then receive data via the data traffic channel.

FIG. 4 presents a signaling diagram of another exemplary message sequence 400 for adjusting the PDCCH aggregation level for UE-specific CORESET according to various aspects and embodiments of the present disclosure. The message sequence 400 also illustrates a process for downlink data transfer in a 5G / NR system. The message sequence 400 includes determining an aggregation level for a UE (eg, UE 102) by a network node (eg, network node 104) and transmitting the aggregation level to the UE. The message sequence 400 also exemplifies a response on the UE side based on the reception of an aggregation level. The message sequence 400 is similar or substantially similar, except that it adds some notable differences. Duplicate explanations of similar elements used in each embodiment are omitted for the sake of brevity.

Similar to the message sequence 400, at 402, the network node 104 may transmit a cell-specific / UE-specific reference signal according to the start of standard downlink data transfer. At 404, the network node 104 may determine the aggregation level (for encoding / decoding the PDCCH) for the CORESET (or multiple CORESETs) assigned to the UE. In some implementations, at 404, network node 104 may determine the initial aggregation level based on UE-specific aggregation level criteria. For example, the network node 104 has a known aggregation level supported by the UE, the position of the UE with respect to the network node 104, the SNR reported by the UE in relation to receiving a signal (eg, a reference signal) from the network node 104. And based on one or more of the geometry of the UE, the most appropriate aggregation level for encoding / decoding the PDCCH (eg, AL1, AL2, AL4, AL8, or AL16) may be determined or selected. In another implementation, at 404, the network node may apply a default aggregation level applied by the UE to decode all candidate PDCCHs (eg, a preset aggregation level that is not unique to the UE). In any of these implementations, if the UE is configured with multiple CORESETs, the network node 104 may determine a single or different aggregation level for the UE to use for two or more of the different CORESETs. ..

At 406, the network node 104 may transmit UE CORESET-specific aggregation level information indicating the selected / determined aggregation level for each CORESET. In various embodiments, the network node 104 may use upper layer signaling (eg, RRC signaling protocol and / or MAC signaling protocol) to transmit aggregation level information to the UE 102. At 408, the UE may send feedback (eg, CSI feedback) to the network node 104 via the uplink feedback channel. At 410, the network node may transmit a possible DCI to the UE via the PDCCH from among the plurality of candidate downlink control channels. At 412, the UE 102 may employ a CORESET-specific aggregation level in an attempt to decode the associated candidate downlink control channel. If the UE receives the PDCCH and successfully decodes it, at 414 the UE may then receive data over the data traffic channel.

At 416, the network node 104 may review the UE-specific aggregation level criteria and, if appropriate, update the initial aggregation level for the CORESET (or multiple CORESETs) assigned to the UE. For example, the network node 104 may be configured to periodically check the aggregation level selection criteria and, based on the selection criteria, determine whether to change the initially configured aggregation level. In this regard, at 416, the network node 104 is the known aggregation level supported by the UE, the position of the UE with respect to the network node 104, and by the UE in relation to receiving a signal (eg, a reference signal) from the network node 104. Based on the reported SNR and UE geometry, it may be possible to determine if the initial aggregation level is appropriate. For example, if the selection criteria were not initially considered at 404 (eg, if the default aggregation level was applied), then network node 104 applies the selection criteria at 416 and the initial aggregation level is the selection criteria. It can be determined whether or not the condition is satisfied. In another implementation, the selection criteria were applied in 404, but if the UE position is now changed, the reported SNR is changed, and / or the UE geometry is changed, the initial aggregation level is no longer the highest. It may not be the proper aggregation level. Therefore, at 416, network node 104 is appropriate for whether the initial aggregation level is appropriate for the current UE-specific performance parameters (eg, the initial aggregation level is appropriate based on the current UE position / geometry. Whether or not) can be determined. If the network node determines that a different aggregation level is more appropriate based on the current UE-specific performance parameters, then the network node 104 determines the updated aggregation level based on the current UE-specific performance parameters. Can be decided. Then, at 418, network node 404 can send updated CORESET-specific aggregation level information to UE 102 (eg, using higher layer signaling), and UE 102 can decode the candidate PDCCH at the initial aggregation level. Instead, you may start using the updated aggregation level.

FIG. 5 presents a flow diagram of an exemplary method 500 for adjusting PDCCH aggregation levels for UE-specific CORESET according to various aspects and embodiments of the present disclosure. Duplicate explanations of similar elements used in each embodiment are omitted for the sake of brevity.

At 502, the network node 104 may select the aggregation level for the CORESET (or multiple CORESETs) assigned to the UE based on the UE-specific aggregation level criteria (eg, capability, position, geometry, etc.). At 504, the network node 104 may transmit aggregation level information indicating the selected aggregation level to the UE. At 506, the network node may determine if the connection / link between the UE and the network node is maintained. If not, method 500 can be terminated. However, at 510, network nodes may periodically reconfirm UE-specific aggregation level criteria if connectivity is maintained. At 512, the network node may determine if the current UE position and / or geometry indicates that a newer aggregation level is more appropriate than the last aggregation level. If not, method 500 may return to 506 and continue as appropriate. However, at 512, if the network node determines that the current UE position and / or geometry indicates that the new aggregation level is more appropriate than the last aggregation level, then at 514, the network node will determine. A new aggregation level may be selected for use by the UE in connection with decrypting the PDCCH. At 516, the network node may send updated aggregation level information indicating the new aggregation level to the UE. Method 500 may continue from 506 until the connection is no longer maintained.

FIG. 6 presents an upper flow diagram of an exemplary method 600 for adjusting the PDCCH aggregation level for UE-specific CORESET according to various aspects and embodiments of the present disclosure. Method 600 provides an exemplary method for a network node (eg, network node 104) of a wireless communication network 100 to perform in connection with servicing a UE of a wireless communication network. Duplicate explanations of similar elements used in each embodiment are omitted for the sake of brevity.

At 602, the first device operates on a processor (eg, network node 104) that determines the aggregation level applied by the second device (eg, UE 102) to decode the candidate downlink control channel associated with CORESET. Can be combined. At 604, the first device transmits aggregation level information indicating the aggregation level to the second device. In various embodiments, based on transmission, the second device employs an aggregation level in connection with an attempt to decode a candidate downlink control channel.

FIG. 7 presents an upper flow diagram of another exemplary method 700 for adjusting the PDCCH aggregation level for UE-specific CORESET according to various aspects and embodiments of the present disclosure. The method 700 also provides an exemplary method for a network node (eg, network node 104) of the wireless communication network 100 to perform in connection with servicing the UE of the wireless communication network. Duplicate explanations of similar elements used in each embodiment are omitted for the sake of brevity.

At 702, the first device operates on a processor (eg, network node 104) that determines the aggregation level applied by the second device (eg, UE 102) to decode the candidate downlink control channel associated with CORESET. Can be combined. At 704, the first device transmits aggregation level information indicating the aggregation level to the second device. In various embodiments, based on transmission, the second device employs an aggregation level in connection with an attempt to decode a candidate downlink control channel. At 706, the first device determines the updated aggregation level applied by the second device to decode the candidate downlink control channel based on the assignment of the second device or the modification of the geometry. At 708, the first device sends updated aggregation level information indicating the updated aggregation level to the second device. In various embodiments, based on transmission, the second device employs an updated aggregation level instead of an aggregation level in connection with an attempt to decode a candidate downlink control channel.

FIG. 8 presents an upper flow diagram of an exemplary method 800 for receiving and applying UE-specific aggregation levels for decoding candidate PDCCH associated with CORESET, according to various aspects and embodiments of the present disclosure. ing. Method 800 is an exemplary method for a UE of wireless communication network 100 (eg, UE 102) to perform associated communication with a network node (eg, network node 104) that provides services to the cell in which the UE is located. offer. Duplicate explanations of similar elements used in each embodiment are omitted for the sake of brevity.

At 802, the first device is operably connected to a processor (eg, UE 102) that receives aggregation level information indicating the aggregation level for CORESET from the second device (eg, network node 104), and the aggregation level is defined. The candidate aggregation level is selected by the second device based on the criteria set. At 804, based on receiving, the first device employs an aggregation level associated with an attempt to decode a candidate downlink control channel associated with CORESET.

FIG. 9 presents a high-level flow diagram of another exemplary method for receiving and applying UE-specific aggregation levels for decoding candidate PDCCH associated with CORESET, according to various aspects and embodiments of the present disclosure. is doing. Method 900 is also an exemplary method for a UE of wireless communication network 100 (eg, UE 102) to perform associated communication with a network node (eg, network node 104) that services the cell in which the UE is located. I will provide a. Duplicate explanations of similar elements used in each embodiment are omitted for the sake of brevity.

At 902, the first device operably connects to a processor (eg, UE 102) that receives first aggregation level information indicating the first aggregation level for CORESET from the second device (eg, network node 104). The aggregation level is selected by the second device from the candidate aggregation levels based on the defined criteria specific to the first device. At 904, based on receiving, the first device employs a first aggregation level in connection with an attempt to decode a candidate downlink control channel associated with CORESET. At 906, the first device receives a second aggregation level information from the second device indicating a second aggregation level for CORESET, and the second aggregation level is a candidate based on a change in the defined criteria. Selected by the second device from the aggregation level. At 908, based on reception, the first device employs a second aggregation level instead of the first aggregation level in connection with an attempt to decode a candidate downlink control channel.

FIG. 10 is a schematic block diagram of a computing environment 1000 in which the disclosed subjects can interact. System 1000 comprises one or more remote components 1010. The remote component 1010 can be hardware and / or software (eg, threads, processes, computing devices). In some embodiments, the remote component 1010 may include a server, a personal server, a wireless communication network device, a RAN device, and the like. As an example, the remote component 1010 may be a network node 104, one or more devices included in the communication service provider network 106, and the like. System 1000 also includes one or more local components 1020. The local component 1020 can be hardware and / or software (eg, threads, processes, computing devices). In some embodiments, the local component 1020 may include, for example, UE 102, one or more components of UE 102, and the like.

One possible communication between the remote component 1010 and the local component 1020 can be in the form of a data packet adapted to be transmitted between two or more computer processes. Another possible communication between the remote component 1010 and the local component 1020 may be in the form of circuit exchange data adapted to be transmitted between two or more computer processes in the radio time slot. The system 1000 includes a communication framework 1040 that may be employed to facilitate communication between the remote component 1010 and the local component 1020, and may include a wireless interface, such as a UMTS network Uu interface, via an LTE network or the like. .. The remote component 1010 can operate on one or more remote data stores 1050 such as hard drives, solid state drives, SIM cards, device memories, etc. that may be employed to store information on the remote component 1010 side of the communication framework 1040. Can be connected to. Similarly, the local component 1020 may be operably connected to one or more local data stores 1030 that may be employed to store information on the local component 1020 side of the communication framework 1040.

To provide the context of the various aspects of the disclosed subject, FIG. 11 and the following discussion provide a brief general description of the suitable environment in which the various aspects of the disclosed subject can be implemented. Intended to do. The subject matter has been described above in the general context of computer-executable instructions for computer programs running on one and / or multiple computers, but those of ordinary skill in the art will disclose other subjects. You should recognize that it can also be implemented in combination with the program module of. In general, a program module includes routines, programs, components, data structures, etc. that perform a particular task and / or implement a particular abstract data type.

As used herein, terms such as "store," "storage," "data store," "data storage," "database," and virtually any other information storage configuration related to the operation and function of the components. The element refers to a "memory component", a component having an entity or memory embodied in "memory". The memory components described herein can be either volatile or non-volatile memory, or can include both volatile and non-volatile memory, and are volatile, but not limited, by way of example. It should be noted that memory 1120 (see below), non-volatile memory 1122 (see below), disk storage 1124 (see below), and memory storage 1146 (see below) can be included. Further, the non-volatile memory can include read-only memory, programmable read-only memory, electrically programmable read-only memory, electrically erasable read-only memory, or flash memory. Volatile memory can include random access memory that acts as an external cache memory. As an example, but not limited to, the random access memory includes synchronous random access memory, dynamic random access memory, synchronous dynamic random access memory, double data rate synchronous dynamic random access memory, and enhanced synchronous dynamic random. It is available in various forms such as access memory, Synchlink dynamic random access memory, and direct Rambus random access memory. In addition, the memory components disclosed herein of a system or method are intended to include, but are not limited to, these types of memory and any other suitable type of memory.

Moreover, it should be noted that the disclosed subject matter can be implemented using other computer system configurations. These computer system configurations include single-processor computer systems or multi-processor computer systems, minicomputing devices, mainframe computers, as well as personal computers, handheld computing devices (eg, mobile information terminals, phones, watches, tablet computers). , Notebook computers, ...), Microprocessor-based electronic devices or programmable consumer electronic devices or programmable industrial electronic devices. Illustrated embodiments can also be performed in a distributed computing environment where tasks are performed by remote processing devices linked through a communication network. However, some, if not all, aspects of this subject matter disclosure can be implemented on a stand-alone computer. In a distributed computing environment, program modules may be stored in both local and remote memory storage devices.

FIG. 11 shows a block diagram of a computing system 1100 capable of operating to perform the disclosed systems and methods according to one embodiment. A computer 1112, which may be, for example, a UE (eg, UE 102), a network node (eg, network node 104), may include a processing unit 1114, system memory 1116, and system bus 1118. The system bus 1118 combines, but is not limited to, system components including system memory 1116 to the processing unit 1114. The processing unit 1114 can be any of the various available processors. Dual microprocessors and other multiprocessor architectures can also be used as the processing unit 1114.

The system bus 1118 is any of several types of bus structures including memory buses or memory controllers, peripheral or external buses, and / or local buses using any of the various available bus architectures. can do. Bus architectures include Industrial Standards Architecture, Microchannel Architecture, Extended Industrial Standards Architecture, Intelligent Drive Electronics, Video Electronics Standards Association Local Bus, Peripheral Component Interconnect, Card Bus, Universal Serial Bus, Advanced Graphics Port, Personal Computer Memory Card International Association Bus. , Firewire (American Electrical and Electronic Society 11164), including, but not limited to, small computer system interfaces.

The system memory 1116 can include a volatile memory 1120 and a non-volatile memory 1122. A basic input / output system including a routine for transferring information between elements in the computer 1112, such as during startup, can be stored in the non-volatile memory 1122. By way of example, the non-volatile memory 1122 may include, but is not limited to, a read-only memory, a programmable read-only memory, an electrically programmable read-only memory, an electrically erasable read-only memory, or a flash memory. Volatile memory 1120 includes read-only memory that serves as an external cache memory. By way of example, but not limited to, read-only memory includes synchronous random access memory, dynamic read-only memory, synchronous dynamic read-only memory, double data rate synchronous dynamic read-only memory, and enhanced synchronous dynamic read. It is available in various forms such as dedicated memory, Synchlink dynamic read-only memory, Rambus direct read-only memory, direct Rambus dynamic read-only memory, and Rambus dynamic read-only memory.

The computer 1112 may also include removable / non-removable volatile / non-volatile computer storage media. FIG. 11 shows, for example, a disk storage 1124. Disk storage 1124 includes, but is not limited to, devices such as magnetic disk drives, floppy disk drives, tape drives, flash memory cards, or memory sticks. In addition, the disk storage 1124 may include the storage medium alone or in combination with other storage media. Other storage media include, but are not limited to, optical disk drives such as compact disc read-only memory devices, compact disc recordable drives, compact disc rewritable drives, or digital versatile disc read-only memory. Detachable or non-removable interfaces such as interface 1126 are commonly used to facilitate the connection of disk storage devices 1124 to system bus 1118.

Computing devices typically include a variety of media, which media can include computer-readable storage media or communication media, the two terms being used differently herein as follows. To.

Computer-readable storage media can be any available storage medium accessible by a computer, including both volatile and non-volatile media, removable and non-removable media. By way of example, but not limited to, computer readable storage media are practiced in connection with any method or technique for storing information such as computer readable instructions, program modules, structured or unstructured data. be able to. Computer-readable storage media are, but are not limited to, read-only memory, programmable read-only memory, electrically programmable read-only memory, electrically erasable read-only memory, flash memory or other memory technology, compact disk read. It can include dedicated memory, digital versatile disks or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices or other tangible media that can be used to store desired information. .. In this regard, the term "tangible" as applicable herein to storage, memory or computer readable media should be understood to exclude the intangible signal itself, which simply propagates as a modifier. It does not relinquish its inclusion in all standard storage, memory or computer readable media, not just the intangible signal propagating itself. In one aspect, the tangible medium can include a non-temporary medium, where the term "non-temporary" as applicable herein to storage, memory, or computer-readable media is a modifier. As such, it is understood to simply exclude the propagating temporary signal itself and does not abandon the inclusion of all standard storage, memory or computer readable media, not just the propagating temporary signal itself. The computer-readable storage medium is accessible from one or more local or remote computing devices, for example via access requests, queries or other data acquisition protocols for various actions relating to the information stored on the medium. So, for example, a computer-readable medium can include executable instructions stored on it, which, upon execution, disconnect the RRC from the system with the processor, further containing the modified band channel data. Perform an operation that involves generating a message.

Communication media typically embody computer-readable instructions, data structures, program modules or other structured or unstructured data in data signals to be modulated, such as carrier waves or other transport mechanisms, and any information. Includes delivery or transport medium. The term "modulated data signal" or signal group means a signal whose features have been set or modified to encode information into one or more signals. By way of example, communication media include, but are not limited to, wired media such as wired networks or directly connected connections and radio media such as acoustic, RF, infrared and other radio media.

Note that FIG. 11 represents software that acts as an intermediary between the user and the computer resources represented in the suitable operating environment 1100. Such software includes operating system 1128. Operating system 1128, which may be stored in disk storage 1124, operates to control and allocate resources for computer system 1112. System application 1130 utilizes resource management by operating system 1128 through program modules 1132 and program data 1134 stored in either system memory 1116 or disk storage 1124. It should be noted that the disclosed subject matter can be implemented with various operating systems or combinations of operating systems.

The user can enter commands or information into the computer 1112 through the input device 1136. In some embodiments, the user interface can allow input of user preference information, etc., with a touch-sensitive display panel, mouse / pointer input to a graphical user interface (GUI), a command line controlled interface, and the like. It can be embodied and allows the user to interact with the computer 1112. The input device 1136 includes a pointing device such as a mouse, trackball, and stylus, a touch pad, a keyboard, a microphone, a joystick, a game pad, a satellite communication antenna, a scanner, a TV tuner card, a digital camera, a digital video camera, a webcam, and a portable device. Includes, but is not limited to, phones, smartphones, tablet computers, and the like. These and other input devices are connected to the processing unit 1114 via the system bus 1118 by interface port 1138. The interface port 1138 includes, for example, a serial port, a parallel port, a game port, a universal serial bus, an infrared port, a bluetooth port, an IP port, or a logical port related to wireless services and the like. The output device 1140 uses some of the ports of the same type as the input device 1136.

Thus, for example, the universal serial bus port can be used to provide input to the computer 1112 and to output information from the computer 1112 to the output device 1140. An output adapter 1142 is provided to show that there are some output devices 1140 such as monitors, speakers, and printers that use special adapters among the other output devices 1140. The output adapter 1142 includes, but by way of example, a video card and a sound card that provide a means of connection between the output device 1140 and the system bus 1118. Note that other devices and / or systems of devices, such as the remote computer 1144, provide both input and output capabilities.

The computer 1112 can operate in a network connection environment using a logical connection to one or more remote computers, such as the remote computer 1144. The remote computer 1144 is a personal computer, server, router, network PC, cloud storage, cloud service, code running in a cloud-computing environment, a workstation, a microprocessor-based device, a peer device, or other common. It can be a network node or the like, and usually includes many or all of the elements described for computer 1112. A cloud computing environment, cloud, or other similar term, may be one or more as needed to allow access to a shared pool of configurable computing resources that can be easily provided and released. It can refer to computing that can share processing resources and data with computers and / or other devices. Cloud computing and storage solutions can store and / or process data in third-party data centers that can take advantage of economies of scale, subscribe to electric utilities to use electrical energy, or provide telephone services. You can see accessing computing resources through cloud services in a similar way to subscribing to a telephone operator for use.

For simplicity, only the memory storage device 1146 is shown with the remote computer 1144. The remote computer 1144 is logically connected to the computer 1112 through the network interface 1138 and further physically connected via the communication connection 1150. Network interface 1148 includes wired and / or wireless communication networks such as local area networks and wide area networks. Local area network technologies include fiber optic distributed data interfaces, copper distributed data interfaces, Ethernet, Token Ring, and more. Wide area network technologies include, but are not limited to, point-to-point links, circuit-switched network-like integrated service digital networks and variants thereof, packet-switched networks, and digital subscriber lines. As mentioned below, wireless technology can be used in addition to or in place of the above.

Communication connection 1150 refers to the hardware / software used to connect the network interface 1148 to bus 1118. The communication connection 1150 is shown inside the computer 1112 for clarity, but can also be outside the computer 1112. The hardware / software for connecting to the network interface 1148 includes internal and external technologies such as, for example, regular telephone grade modems, modems including cable modems and digital subscriber line modems, integrated service digital network adapters, and Ethernet cards. Can include.

The above description of the exemplary embodiments of the disclosed subject matter is intended to be exhaustive, including the description of the abstract, or to limit the disclosed embodiments to the disclosed rigorous embodiments. do not have. Although specific embodiments and examples have been described herein for purposes of explanation, various modifications that are considered to be within the scope of such embodiments and examples are possible, as will be appreciated by those skilled in the art. ..

In this regard, the disclosed subject matter has been described in connection with various embodiments and corresponding figures, but where applicable, without departing from the disclosed subject matter, other similar embodiments. Understand that changes can be made and added to embodiments described to perform the same, similar, alternative or alternative functions of the subject matter disclosed. I want to be. Accordingly, the subject matter disclosed should not be limited to any single embodiment described herein, and its breadth and scope should be construed in accordance with the claims herein. be.

As used herein, the term "processor" refers to a single-core processor, a single processor with software multi-thread execution capability, a multi-core processor, a multi-core processor with software multi-thread execution capability, and a multi-core with hardware multi-thread technology. It can refer to virtually any computing unit or device, including, but not limited to, processors, parallel platforms and parallel platforms with distributed shared memory. In addition, the processor is an integrated circuit, application-specific integrated circuit, digital signal processor, field programmable gate array, programmable logic controller, complex programmable logic device, discrete gate designed to perform the functions described herein. Alternatively, it can refer to transistor logic, discrete hardware components, or any combination thereof. Processors can utilize nanoscale architectures such as, but not limited to, transistors, switches and gates based on molecules and quantum dots in order to optimize space utilization or improve the performance of user equipment. Processors can also be implemented as a combination of computing processing units.

As used in this application, terms such as "component," "system," "platform," "layer," "selector," and "interface" are computer-related entities that have one or more specific functions. Or intended to refer to an entity associated with the actuator, which entity can be either hardware, a combination of hardware and software, software, or running software. By way of example, the components can be, but are not limited to, processes, processors, objects, executables, threads of execution, programs, and / or computers running on the processor. By way of example, but not by limitation, both the application running on the server and the server can be components. One or more components may reside within a process and / or execution thread, and the components may be localized on one computer and / or distributed among two or more computers. May be done. In addition, these components can be run from different computer readable media containing different data structures. A component is one or more data packets (eg, in a local system, in a distributed system, and / or over a network such as the Internet, and another component, eg, over the Internet by a signal, another system. It may communicate via local and / or remote processes, such as following a signal that contains data from one component that interacts with. As another example, the component can be a device having a specific function provided by a mechanical component operated by an electric or electronic circuit operated by a software or firmware application executed by the processor, wherein the processor. May be inside or outside the device and runs at least part of the software or firmware application. As yet another example, a component can be a device that provides a particular function through an electronic component without the use of mechanical parts, in which the electronic component at least partially performs the function of the electronic component. It can include a processor that runs the given software or firmware.

In addition, the term "or" is intended to mean a comprehensive "or" rather than an exclusive "or". That is, unless otherwise indicated or apparent in the context, "X utilizes A or B" is intended to mean any of the natural inclusive substitutions. That is, when X uses A, X uses B, or X uses both A and B, "X uses A or B" is satisfied in any of the above cases. .. Further, it is clear from the context that the terms "one (a)" and "one (an)" as used herein and in the accompanying drawings generally refer to the singular or unless otherwise indicated. Unless otherwise, it should be construed to mean "one or more."

Further, the term "include" is intended to be adopted as an open or comprehensive term rather than a closed or exclusive term. The term "include" can be replaced with the term "comprise" and is treated in the same scope unless expressly used otherwise. For example, "a basket of fruit inclusive an apple" is treated in the same wide range as "a basket of fruit combining an apple".

In addition, terms such as "user equipment (UE)", "mobile station", "mobile", "subscriber station", "subscriber equipment", "access terminal", "terminal", "handset" and similar. The term refers to a wireless device used by a subscriber or user of a wireless communication service to receive or transmit data, control, voice, video, sound, gaming, or virtually any data or signaling stream. The above terms are used interchangeably herein and in related drawings. Similarly, terms such as "access point," "base station," "NodeB," "developed NodeB," "eNodeB," "home NodeB," and "home access point" are also used interchangeably in this application. A wireless network component or wireless network device that supplies or receives data, control, voice, video, sound, gaming, or virtually any data or signaling stream to a set of subscriber stations or provider-enabled devices. Point to. Data and signaling streams can include packetized or frame-based flows.

In addition, the terms "core network," "core," "core carrier network," "carrier side," or similar terms are typically among aggregation, authentication, call control and switching, billing, service calls, or gateways. Can refer to a component of a telecommunications network that provides some or all of the above. Aggregation can refer to the highest level of aggregation in a service provider network, with the next level below the core node in the hierarchy being the distributed network and then the edge network. UEs typically do not connect directly to the core network of a large service provider, but can be routed to the core via a switch or radio access network. Authentication can refer to a determination as to whether a user requesting a service from a telecommunications network has the authority to request a service within this network. Call control and switching can refer to future path-related decisions of the call stream across carrier equipment based on call signal processing. Billing can be related to collation and processing of billing data generated by various network nodes. Two common types of billing mechanisms found in today's networks can be prepaid billing and postpaid billing. Service calls can be based on some explicit action (eg, call transfer) or on the basis of implied (eg, call wait). Note that service "execution" may or may not be a core network feature, as third-party networks / nodes may be involved in the actual service execution. Gateways can reside in the core network to access other networks. The gateway function may depend on the type of interface with another network.

In addition, terms such as "user," "subscriber," "customer," "consumer," "prosumer," and "agent" are terms of context. As long as no particular distinction is guaranteed between them, they are used interchangeably throughout this specification. Artificial intelligence allows these terms to pass through the ability to reason about human entities, or automated components that can provide simulated vision, sound recognition, etc. (eg, complex mathematical formalisms). Please understand that it can point to (supported through).

Aspects, features, or advantages of the subject can be utilized in virtually any or any, wired, broadcast, wireless telecommunications, wireless technology or network, or a combination thereof. Non-limiting examples of such technologies or networks include broadcasting technologies (eg, subhertz broadcasting, ultra-low frequency broadcasting, ultra-low frequency broadcasting, low frequency broadcasting, medium frequency broadcasting, high frequency broadcasting, ultra high frequency broadcasting, ultra high frequency). Broadcasting, Terra Hertz Broadcasting, etc.), Ethernet, X.I. 25, power line type networks, such as power line audio-video Ethernet, femtocell technology, Wi-Fi, worldwide interoperability for microwave access, extended general purpose packet radio service, 3rd generation partnership project, long term evolution, 3rd Generation Partnership Project Universal Mobile Telecommunications System, 3rd Generation Partnership Project 2, Ultra Mobile Broadband, High Speed Packet Access, High Speed Downlink Packet Access, High Speed Uplink Packet Access, Enhanced Data Rate for Global System for Mobile Communication Evolution Radio Access Network, It may include a universal mobile telecommunications system, a territorial radio access network, or a long term evolution advanced.

The term "inference" or "inference" generally refers to the process of inferring about a system, environment, user, or inferring its state and / or intent from a set of observations obtained via events and / or data. Can point. The acquired data and events may include user data, device data, environmental data, data from sensors, sensor data, application data, implicit data, explicit data and the like. Inference can be used, for example, to identify a particular concept or behavior or to generate a probability distribution over the states of interest based on data and event considerations. Inference may also refer to the technique used to generate higher level events from a set of events and / or data. From such inferences, in some cases, whether events can correlate with each other in close temporal proximity, and whether the event and data are derived from one or more events and data sources, etc. A new event or behavior will be constructed from the observed event and / or the set of stored event data. Various classification schemes and / or systems (eg, support vector machines, neural networks, expert systems, Bayesian trust networks, fuzzy logic, and data fusion engines) with automated and / or estimation behavior in relation to the disclosed subject matter. It can be used in connection with doing.

The ones described above include examples of systems and methods illustrating the disclosed subject matter. Of course, it is not possible to describe all combinations of components or methods herein. One of ordinary skill in the art can recognize that many further combinations and rearrangements of the subject matter of the invention described in the claims are possible. Further, as long as terms such as "includes", "has", and "possess" are used in the detailed description, claims, annexes and drawings, such as these. The term is intended to be as comprehensive as the term "comprising" as it is interpreted when "comprising" is used as a transitional term in the claims. Will be done.

Claims (20)

With the processor
A first device comprising a memory for storing executable instructions that facilitates execution of an operation when executed by the processor.
Determining the aggregation level applied by the second device to decode the candidate downlink control channel associated with the control channel resource set.
A first device comprising transmitting aggregation level information indicating the aggregation level to the second device. The first aspect of claim 1, wherein the second device is configured to apply the aggregation level in connection with an attempt to decode the candidate control downlink control channel based on said transmission. Device. The first device of claim 1, wherein determining the aggregation level comprises selecting the aggregation level from a group of candidate aggregation levels based on defined criteria. The first device according to claim 1, wherein determining the aggregation level includes determining the aggregation level based on the ability information indicating the aggregation level supported by the second device. The first device according to claim 1, wherein determining the aggregation level includes determining the aggregation level based on the position of the second device. The first device according to claim 1, wherein determining the aggregation level includes determining the aggregation level based on the distance between the second device and the first device. The determination of the aggregation level is based on selecting a first aggregation level based on the distance being shorter than the defined distance and on the basis that the distance is longer than the defined distance. The first device of claim 6, comprising selecting a second aggregation level, wherein the first aggregation level is lower than the second aggregation level. The first device of claim 1, wherein determining the aggregation level includes determining the aggregation level based on the geometry associated with the second device. The determination of the aggregation level is based on the selection of a first aggregation level based on the geometry being less than the defined value and the geometry being greater than the defined value. The first device of claim 8, wherein the first aggregation level is higher than the second aggregation level, comprising selecting a second aggregation level. The determination of the aggregation level is a first criterion applicable to the aggregation level capability of the second device, a second criterion applicable to the position of the second device with respect to the first device. And to select the aggregation level from the group of candidate aggregation levels based on the combination of criteria selected from the group of criteria consisting of the third criteria applicable to the geometry associated with the second device. The first device according to claim 1. The first device according to claim 1, wherein transmitting the aggregation level information includes adopting a signaling protocol classified as an upper layer signaling protocol. 11. The first device of claim 11, wherein the signaling protocol comprises a radio resource control signaling protocol or a medium access control protocol. Determining the aggregation level applied by the second device to decode the candidate downlink control channel associated with the control channel resource set by the first device operably connected to the processor.
A method comprising transmitting aggregation level information indicating the aggregation level to the second device by the first device. 13. The method of claim 13, wherein as a result of said transmission, the second device is capable of applying the aggregation level in connection with an attempt to decode the candidate control downlink control channel. 13. The method of claim 13, wherein determining the aggregation level comprises selecting the aggregation level from a group of candidate aggregation levels based on defined criteria. The defined criteria are a first criterion applicable to the aggregation level capability of the second device, a second criterion applicable to the position of the second device relative to the first device, and the first. 15. The method of claim 15, selected from a group of criteria consisting of a third criterion applicable to the geometry associated with the device of 2. 13. The method of claim 13, wherein transmitting the aggregation level information comprises adopting a signaling protocol classified as an upper layer signaling protocol. With the processor
A first device comprising a memory for storing executable instructions that facilitates execution of an operation when executed by the processor.
Receiving aggregation level information indicating the aggregation level for the control channel resource set from the second device, wherein the aggregation level is selected from the candidate aggregation level by the second device based on a defined criterion. That and that
A first device comprising adopting the aggregation level in connection with an attempt to decode a candidate downlink control channel associated with the control channel resource set based on said reception. The defined criteria are for a group of device criteria consisting of the aggregation level capability of the first device, the position of the first device with respect to the second device, and the geometry associated with the first device. The first device of claim 18, which is evaluated. The aggregation level information includes the first aggregation level information, the aggregation level includes the first aggregation level, and the operation is:
Receiving from the second device second aggregation level information indicating a second aggregation level for the control channel resource set, wherein the second aggregation level is a change to the defined criteria. Based on the fact that it is selected by the second device from the candidate aggregation level,
18. The claim 18 further comprises adopting the second aggregation level instead of the first aggregation level in connection with an attempt to decode the candidate downlink control channel based on said reception. The first device described.

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